getAllNodeIds

Get all node ids.
A typical application will call this method multiple times, where 'after'
is the last row read. The maxCount parameter defines the maximum number of
node ids returned, 0 meaning no limit. The order of the node ids is specific for the
given persistent manager. Items that are added concurrently may not be included.

Parameters:

after - the lower limit, or null for no limit.

maxCount - the maximum number of node ids to return, or 0 for no limit.